Emergency lock



March 3, 1931. H. c. w. JOHNSON 1,795,283

EMERGENCY LOCK Filed May 25, 1928 5 Sheets-Sheet 1 IGOR GLDSEG F OPE/Vsl I 51 3 5a g INVENTOR ATTOR NEY March 3, 1931. H. c. w. JOHNSON1,795,283

EMERGENCY LOCK Filed May 25, 1928 3 Sheets-Sheet 2 ATTORNEY March 3,1931. JOHNSON 1,795,283

EMERGENCY LOCK Filed May 25, 1928 3 Sheets-Sheet 5 C f i E 2 1 I I I I{61 v I a 45 1 Z I s 1 i I 1 z I I a I I I I I s s g 55 6'2 fi J l 1 .58 I f 0 6'0 .5 INVENTOR ATTORNEY Patented Mar. 3, 1931 HENRY c. w.JOHNSON, or PASADENA, CALIFORNIA EMERGENCY LOCK Application filed May25, 1928. Serial No. 280,611.

, This invention relates to door locks, and its general object is toprovide a protecting device for banks and'the like, that'not onlyincludes means for locking doors when desired from a plurality of placesremote from the doors, but also includes signalling means capable ofbeing put into operation simultaneously with the locking operation ofthe door locking means.

A further object of the invention is to provide an emergency lock for adoor, that can be operated in a manner whereby the operator cannot bedetected, and the releasing means as well as the locking means is sodisposed to preclude the possibility of an unauthorized person fromendeavoring to unlock the door which when locked cannot be opened byforce, therefore will prevent any person from leaving the premises untilthe door is released.

Another object of the invention is to provide a "device of the characterset forth, that is simple in'construetion, inexpensive tomanufacture andto install and is eflicientin operation and service;

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like "orcorresponding parts throughout the several views, and in which: I

Figure 1 is a sectional View showing parts of my invention in elevationand in normal position. t

Figure 2 is a sectional view taken approximately on line 2 2 of Figure1.

Figure 3 is a detail view illustrating the gear which formsa part of myinvention and its operating rod.

Figure 4 is a similar view of the contact r carrying disk.

Figure 5 is a view of the cont-act plate. Figure 6 is a fragmentarysectional View taken longitudinallythrough the rack and' showing thelocking bolt of my device in side elevation.

Figure 7 is a transverse sectional view taken through. the drum andshowing an operating lever therefor. I

Figure 8 is a perspective view of the operating rod.

Figure 9 is a sectional view taken approximately on line -99 of Figure1.

Figure 10 is a diagrammatic View illustrating the lock in operativeposition, and the signalling system associated therewith.

Referring to the drawings in detail, the letter A indicates a door whichmay beof the rotating or swinging type, but in any event, the door isprovided With a recess to accommodate an insert 1 of metal or likematerial which is provided with a bore 2 to accommodate the locking bolt3 of my locking mechanism,'as suggested in Figure 1 of the drawings. Thelocking bolt is shown in this figure as being in retracted or normalposition. a I

The letter B indicates the floor of a buildmg which as shown is concreteand arranged in the floor and extending through the same is a flangedsleeve 4 which is substantially square in cross section and disposed inregistration with a compartment 5 arranged in a casing 6 secured in anyappropriate manner to the underside of the floor as best shown in Figure1 of the drawings.

The casing 6 is formedwith a flanged opening in one end thereof, andthis opening is provided with a hinged door 7 having any appropriatelatching or looking means for securing the door in its closed positionas shown.

Disposed in the casing adjacent the opening is an upright 8 having itsends secured to the top and bottom of the casing and formed with saidupright is a bearing 9 having se- 1 cured therein'one end of a shaft 10While the opposite end of the shaft is secured to one side of the casingas best shown in Figure 2. Depending from the top of the casing andsecured in position through the instrumentality of angle brackets 11 isa plate 12 having passed therethrough binding posts 13 which terminatein heads 14- for a purposewhich will be presently apparent. Looselymounted on the shaft 10 is a disk 15 of insulating material and whichhas secured thereto and arranged adjacent its periphery on one side, acontact strip 16 positioned to contact the heads 14 of the binding postfor wiring engagement therewith as suggested in Figure 1.

A gear 17 is also loosely mounted on the shaft 10 and surrounding saidshaft 10 and having its end convolutions engaging the gear 17 and theupright 8 is a coil spring 18 adapted for holding the disk 15 in closeassociation with the plate 12 so that the contact strip will engage theheads upon rotation of said disk as will be apparent.

Arranged in parallelism with the shaft 10 is a shaft 19 having mountedthereon a drum 20 having secured thereto a lever which includes anarcuate portion 21 and an arm 22.

The drum is provided with a recess 23 to accommodate the hooked end 24of a lever 25 which is pivoted intermediate its ends as at 26, and thehooked end is normally held in the recess through the instrumentality ofa coil spring 27.

Secured to one end of the drum in any appropriate manner for movementthereby is an arm 28 which is formed with a plurality of openings 29 forthe purpose of adjustably receiving one of the ends of a rod 30 whichhas its opposite end passing through a slot 31 formed in the gear 17,and the last mentioned end of the rod is reduced to provide a stud 32secured in the disk 15, as best shown in Figure 9.

Rising from the bottom of the casing is a bracket 33 which has securedthereto one end of a coil spring 34 while the opposite end is secured tothe hooked end of the ar 22. This arm 22 has secured thereto an eye bolt35 which receives one end of a cable 36 trained through a sheave wheelor pulley 37 and passes through an opening 38 formed in the end of thecasing as shown in Figure 1.

Arranged for slidable movement in the compartment 5 is a rack 39 havingits teeth in mesh with the teeth of the gear 17 and the compartment isprovided with a slot 40 for this purpose. The upper end of the rack 39is formed with a bore to accommodate the shank 41 of the locking boltThe shank has a slot 42 arranged longitudinally therein for receiving apin 43 secured in the bore and transversing the same, as best shown inFigure 6. The locking bolt is normallydisposedin its raised position asshown in Figure 6 by a coil spring 44 arranged in the bore of the rack.The locking bolt is mounted in the rack in the manner as shown anddescribed for the purpose of locking the door in the event the doorshould be in open position, and it will be apparent that if the bolt isarranged in its locking position as shown in Figure 10, when the door ismoved to its closed position, the bolt will engage the inclined wall 45of a recess formed in the insert 1 and thereby repress the bolt untilthe bore of said insert is disposed in registration with the sleeve,then the spring 44 will force the bolt into said bore to hold the dooragainst movement.

Secured to one end wall of the casing by a bracket clamp 46 is a magnet47 having its core 48 arranged in alignment with one end of the lever25.

By this construction it will be seen that when the magnet is energized,it will rock the lever 25 for moving the hooked end thereof out of therecess 23 of the drum to allow the coil spring 34 to rotate the drumwhereby said arm 28 will be moved accordingly to pull upon the rod 30which in turn will rotate the disk 15 and the gear 17, for disposing thecontact strip 16 in engagement with the heads of the binding posts 13and for arranging the bolt in its operative position. The bolt isretracted by pulling upon the cable 36 which reverses the movement ofthe drum and the parts operated by the arm 28 as will be apparent.

In Figure 10 I have illustrated the manner of connecting a signallingsystem with my locking mechanism, and this system includes means fornotifying the police department, as well as police andpersons in thevicinity of the building in which my locking device is installed. Thesignalling sys tem is adapted to be put into operation approximatelysimultaneously with the operation of locking a door by my lockingmechanism and this system also includes indicating means for notifyingpersons in the building that the mechanism has been operated.

The magnet 47 is energized for operating the locking mechanism byswitches 49 which of course may be arranged at any desired place remotefrom the locking mechanism and any number of switches may be employed.The switches are in electrical connection with the magnet 47 and asource of electrical energy 50, through the medium of a conductor 51connected with one of said switches and to a conductor 52 which isconnected with the remaining switches. The switches are connected to aconductor 53 by conductors 54, 55, and 5G and the conductor 53 isconnected with a conductor 57 having one end connected with the sourceof energy 50 which likewise has connected thereto a conductor 58 havingconnection with a conductor 59 leading to and connected with the magnetto complete the circuit thereto as shown.

The signalling system is put into operation prior to the operation ofthe locking bolt 3, and this feature of the device is due to the slot 31in the gear 17, which allows the rod 30 to move the distance of the slotbefore it operates the gear 17. However, the rod 30 will rotate the disk15 during its movement in the slot 31, with the result the strip 16 isdisposed in contacting engagement with the heads 14- of the binding post13 to close the circuit to the signalling system before the gear 17 isoperated.

One of the binding posts 13 has electrically connected thereto theconductor 57 which as previously set forth is connected to the source ofenergy 50 having also connected thereto a conductor 58. In connectionwith the conductor 58 is an annunciator of the drop sig nal type andwhich is adapted to be disposed in a police station or the like. For thepurpose of illustration, I have shown one of the dropping plates of theannnnciator which is indicated by the reference numeral 60. Theannunciator is in electrical connectionwith the other binding post 13 bya conductor 61 which has connected thereto a conductor 62 leading to anaudible signal such as an electric bell 63 disposed in the buildingequipped with my device. Ihe bell 63 is also in electrical connectionwith the conductor 53 and this conductor 53 as well as the conductor 62have in electrical connection therewith visual signalling means which asshown are electric lamps 64 which is adapted to be disposed adjacenteach switch whereby a person in operating the switch can see at a glancewhether or not the locking mechanism has been put into operation.

The switches 49 are to be secreted in such manner that the burglar orbandit will inadvertently close the particular circuit, upon the openingof a cash drawer, etc.

From the above description and disclosure of the drawings, it will beobvious that I have provided a combined door locking device andsignalling system for the purpose of protecting banks and the like frombeing robbed and also to trap persons attempting to rob the premisesprotected by my device.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes fall within the scope of the appended claims.

What I claim is:

1. In a device of the character described,

gear and secured to said disk, a rotatably.

mounted drum, an arm carried by the drum and having secured thereto theopposite end of said rod, a lever including an arcuate shape portionsecured to said drum, an arm formed with said arcuate shape portion, acoil spring a casing, a-rack mounted for slidable movement in saidcasing, a gear for moving said rack, a locking bolt operated by saidrack,

means carried by a door for receiving said lockingbolt, a shaft looselyreceiving said gear, an insulating disk carried by said shaft,

means secured to said disk and passing through aslot formed in said gearfor rotating said disk, adrum, a shaft loosely receiving said drum, anarm secured to said drum and being connected to said last mentionedmeans, means for rotatmg sa1d drum, a lever pivotally securedlntermedlate its ends and being adapted to prevent rotation of said 8drum, and a cable for resetting said drum. In testimony whereof I affixmy signature.

HENRY C. W. JOHNSON.

